基于 AT89 C51单片机的闭环温度测控系统中变送器模块的设计

摘要

This paper gives a design of transmitter module of the intelligent temperature control sys -tem based on AT89C51 MCU.The design covers the design of sensor selection , voltage and current con-version and signal conditioning circuit .%给出了一个基于AT89C51单片机的智能温度测控系统中的变送器模块的设计方案。该方案涵盖了传感器选型、电压电流转换及信号调理电路的设计。